DiscounTechnology integrates top tier manufacturers of hard drives into its brand-compatible 3rd party hard drive kits. We always ensure that our drives are of the same brand/models that the system builders use (e.g. WD, Hitachi, Seagate, Toshiba) or we ensure that the models that we use meet or exceed the integrators specifications. For example we will NEVER substitute a drive rated for desktop duty into a kit designed for server grade duty cycles (24x7). All 3rd party kits are fully compatible with the systems shown on the product listing. If your system is not on the list, please call a representative for compatibility as our lists are not always fully inclusive.